This is a useful book although it is small. It contains some technical terms for da'wah in English. No doubt all scholars and callers to Islam in English are in much need to something like that to conveys the right message of Islam to all those speak English.
A brief but nice booklet discussing Zakaah, those items and amounts upon which it is due, and where it is to be spent. Includes a few important fataawa related to Zakaah
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1269
An informative and detailed guide to new Muslims discussing the main pillars of Islam, Faith, as well as various commandments and prohibitions in Islam.
Author: AbdulRahman Bin Abdulkarim Al-Sheha
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1383
An Excellent Gift to Students of Islamic Sciences Literally translated 'The Fundamental Principles of Qur'aanic Interpretation,' this book refers to the branches of knowledge which are necessary to provide an accurate interpretation of the Qur'anic texts, such as Arabic grammar and syntax, Arabic literature and Qur'anic sciences ('uloom al-Qur'aan). Addressed topics include the Tafseer of the Qur'an, books of tafseer, translations of the Qur'an, Wahy ('divine revelation'), reasons for revelation, the differences between Makkan and Madinan revelations, Naskh, the Muhkam and Mutashaabih, and more.
Author: Abu Ameenah Bilal Philips
An excellent 18 page treatise upon the excellence of Hajj and its rulings. Taken from Silsilah Ahadeeth As-Saheehah & Silsilah Ahadeeth Ad-Daeefah. Translated by Abbas Abu Yahya
Author: Muhammad Naasiruddeen al-Albaanee
Translators: Abbas Abu Yahya
Issues that the caller to Allah must obtain
Author: Muhammad ibn Saleh al-Othaimeen